*{
    margin: 0;
    padding: 0;
}

.box{
    width: 100vw;
    height: 100vh;
    background: black;
    /* border: 3px solid blue; */
}

.box1{
    color: white;
    font-size: 30px;
    text-align: center;
    line-height: 45px;
}

.box2{
    background: url(img/箭头.jpg);
    background-size: 100% 100%;
    position: absolute;
	width: 13vw;
	height: 10vh;
	bottom: 10vh;
	right: 17vw;
	cursor: pointer;
}

.box2:hover{
	transform: scale(1.1,1.1);
	transition-duration: 0.5s;
}